The Plecoptera are an order of insects, commonly known as stoneflies. Some 3,500 species are described worldwide, with new species still being discovered. Stoneflies are found worldwide, except Antarctica. Stoneflies are believed to be one of the most primitive groups of Neoptera, with close relatives identified from the Carboniferous and Lower Permian geological periods, while true stoneflies are known from fossils only a bit younger. Their modern diversity, however, apparently is of Mesozoic origin.[
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 271 x 480 | JPG | 13 | |
標準授權 | S | 451 x 800 | JPG | 15 | |
標準授權 | M | 1300 x 2305 | JPG | 18 | |
標準授權 | L | 1679 x 2977 | JPG | 20 | |
標準授權 | XL | 2124 x 3765 | JPG | 22 | |
標準授權 | MAX | 3376 x 5984 | JPG | 23 | |
標準授權 | TIFF | 4774 x 8463 | TIF | 39 | |
進階授權 | WEL | 3376 x 5984 | JPG | 88 | |
進階授權 | PEL | 3376 x 5984 | JPG | 88 | |
進階授權 | UEL | 3376 x 5984 | JPG | 88 |
XS
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M
L
XL
MAX
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標準授權 | 271 x 480 px | JPG | 13 點 |
標準授權 | 451 x 800 px | JPG | 15 點 |
標準授權 | 1300 x 2305 px | JPG | 18 點 |
標準授權 | 1679 x 2977 px | JPG | 20 點 |
標準授權 | 2124 x 3765 px | JPG | 22 點 |
標準授權 | 3376 x 5984 px | JPG | 23 點 |
標準授權 | 4774 x 8463 px | TIF | 39 點 |
進階授權 | 3376 x 5984 px | JPG | 88 點 |
進階授權 | 3376 x 5984 px | JPG | 88 點 |
進階授權 | 3376 x 5984 px | JPG | 88 點 |